﻿using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
namespace XiaoYuStock.Core
{
    /// <summary>
    /// 读写配置文件类
    /// </summary>
    public class IniConfig
    {
        // 声明INI文件的写操作函数 WritePrivateProfileString()
        [System.Runtime.InteropServices.DllImport("kernel32")]
        private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);

        // 声明INI文件的读操作函数 GetPrivateProfileString()
        [System.Runtime.InteropServices.DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string key, string def, System.Text.StringBuilder retVal, int size, string filePath);

        private string sPath = null;

        /// <summary>
        /// 
        /// </summary>
        /// <param name="path"></param>
        public IniConfig(string path)
        {
            this.sPath = path;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="section"></param>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public void Write(string section, string key, string value)
        {
            // section=配置节，key=键名，value=键值，path=路径
            WritePrivateProfileString(section, key, value, sPath);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="section"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public string ReadValue(string section, string key)
        {
            // 每次从ini中读取多少字节
            System.Text.StringBuilder temp = new System.Text.StringBuilder(255);

            // section=配置节，key=键名，temp=上面，path=路径
            GetPrivateProfileString(section, key, "", temp, 255, sPath);
            return temp.ToString();
        }
        #region 静态部分
        /// <summary>
        /// 
        /// </summary>
        static string IniConfigFile=string.Empty;
        /// <summary>
        /// 
        /// </summary>
        static IniConfig _instance = null;
        /// <summary>
        /// 
        /// </summary>
        static IniConfig()
        { 
           string path= System.Reflection.Assembly.GetExecutingAssembly().Location;
           IniConfigFile =Path.Combine(path.Substring (0 , path.LastIndexOf('\\')),"ini.ini");
        }
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        static IniConfig GetInstance()
        {
            if (_instance == null)
                _instance = new IniConfig(IniConfigFile);
            return _instance;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="section"></param>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public static void WriteConfig(string section, string key, string value)
        {
            if (!File.Exists(IniConfigFile))
            {
                File.Create(IniConfigFile);
            }
            IniConfig config = IniConfig.GetInstance();
            config.Write(section, key, value);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="section"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string ReadConfig(string section, string key)
        {
            if (!File.Exists(IniConfigFile))
            {
                File.Create(IniConfigFile);
            }
            IniConfig config = IniConfig.GetInstance();
            return config.ReadValue(section, key);
        }
        #endregion
    }
}
